Paper-corrugating machine.



15W. D.' WMS. PAPER G0Lm'UGMINv-G4 MACHINE.

PLIGATIO'N FILED APR. 2&1, 1912.

Y Emented Oct. A2T?, .1914."

' 2 SHEETS-SHEET 1;

A. TW, Di, -WEIS. l PAI'JBR CORRUGATING MACHINE .A-'PPLIUATI'ON FILED FR. 24, 1912.'

1,'1 1 5,265. patented ont. 27, 1914.

'MMMMU i2 v 14 V A man "STATES:

ALWIN w. D.`wEis, os QUINCY, ILLINOIS.

y PAPEBAcoRnUGATiNG' MACHINE.

speincatin o f Letters Patent.

'Patented oct. 27, 1914.

'Application in i spin 24, i912. .serial No. 693,012.

'V Toall 'inkom it may concern for corrugating strawboard i Vbeing had tothe accompanying drawing' Be itknown that I, `ALw1N D. Weis, a citizen of the United States, residing. aty

I Quino in the county of Adams and State of Illinois, have invented certain new, and usefullmprovements: inI Paper-Corrugating Machines, of which the following is a speci' fication.- e l p.

This inventionrelates to machines fo corrugating paper, and more particularly ture of cushion layers or pads to be used in connectionwith cell cases in the packing'andv transportation of eggs.- l

The invention is fully disclosed in the description and claims following, reference forming a part of this specification'.

1y of the `drawin is a side elevation of a machine embodying the invention.

2 is a top plan.view 3- is a fragmentary detailillu'stratin the corrugating rollsand related parts. ig. 4:'

shows the manner "of applying the ,corru-l eg case. 'Fig.5' is aj gated blanks to an plan view of one of vthe 4finished blanks. Fig. 6 is a fragmentary view illustrating the steam sprayer for the strawboard'preparatory to corrugatin The; machine isv designedl specifically to form cushioning blanks for the bottom', top, and, if desired, the sides and ends of eggcases'and preventcontact therewith.` Commonly this 'space is iilled with some fibrous material, -such as excelsior, hay, straw, or' the like, the use of which not only-"involves expense for materials, but muchmore for labor. signed to'serve the same purpose, and with much less labor in packing. The niati'eriall itself, is not expensive, and' the machine herein described has -a capacity for a very large and rapid productioru'sothat the cost but 1ittle, if any, more .than excelsior, and it lis much' less of the finished article is troublesome to use.' i Referrin now to the drawing, 1 denotes the main ame, which has 'rearwardly eX- tending brackets 2 to take the supply roll 3 of thin strawboard, the length of which roll corresponds to the desired width \of the cushion sheet when completed. In front of thisl is mounted a pair of feed rolls 4,: of.;a familiar type, driven by albelt 5 -running on pulleys 6 and 7. These rolls are speeded so in the manufac.

of. the same. Fig.

The lcorrugated strawboard is de as to draw forward, by their constant revolution', Just enough material to furnish slack for the 4intermittent ,'feed, to Abe described presently. From the feed rolls the sheet .passes over 'a roll 8 mounted on a pair of 'brackets 9 provided with housingslO taking .Journal bearings 11, adjustablel by means ofscrews 12, with reference to Vthe material passing between the corrugatingjrolls.' In `these bearings is vmounted a luted roller 13 having ribs 14 and' doubly. wide ribs 1 5lat 'every seventhspace. In bearings 16 of the scribed. The roller and are given concurrent rotary. motion by spur gears 18. and

a p ipe 22 from 'a supply pipe 2 1, 4communie'ating with a steam -generator not shown. l,Similar provision is made for the smaller roll, and by virtue of the heat thus imparted rugations in the paper pain between -dryand iron -the corrugated material that the corrugations will notichangeform when they leave the drum, it isdesirable to hold as possible. This, is accomplished lby pass-v -ing the sheet over the small roller ,and under 'a pair of retainingwires or'ban'ds 23, almost fully encircling lthe drum. One end of each wire connects with a cross-bar or rod 24 over which the sheet is' passed' in feedingit to .the rolls. The corrugated sheet bands at the top of the d rum in a loop, as i shown in Fi l1. T,o prevent its-passing back-under t e" smaller roll again, suitable strippers 25 areprovided,` the yforward ends of which enter'grooves 26 in the drum, land lift'thev sheet out of the corrgations, as indicated. These strippers are attached to a suitable crossbar,27. To the same cross-bar is attached purpose of which is to'curve the front end fof the strawboard sheetin: the initial opere ation 'of threading it--into place between the corrugating rolls. As the encircling wires 2 3 pass between the corrugating rolls, it is necessary that the teeth of the smaller rolls should bg, `grooved at a, a, 'to receive said wires, as shown in Eig. 2. Tensile springs b main frame is mounted a-large iuted drinn 17, the exact 'converse of the roller just de- AThe drum'is made hollow and littedt .with steam' tight heads20, and is supplied withsteam through one of its bearings-by.

to themal permanent lset is given to the corthem. In order, however, to so t oroughly thepaper in-.contact with the drum as long ,l

inallyemerges from under the retaining a curved dedecting plate 2.8, the

iio

Y in close ontact with the hot drum until released.

Rotary motion is imparted to the corrugating rolls by spur gears 29 and 30, the lat- A ter attached to a cross-shaft 3l mounted in suitable bearings 32 on the main frame, and

` drivenby a pulley 33, the pinion 29 being merely an idler to transmit vmotion to the vlarge drum in the sameA direction as that of the driving pulley. I

Nvar the front end of the machine is mounted a. fixed shear blade 34, the lower edge of whichis in line with the top surface of the corrugated sheet as it is fed forward. The sheet passes under a plate 35 suitably attached to ay framework mounted on the main frame. AThis framework comprises a pair of standards 36, at each side, and con` necting top bars 37. Between these bars and the main frameare mounted vertical guides 3S bearing across head 39, to which is attached a shear blade 40. The cross head connectsby suitable rods 41 with an eccentric 42 mounted on a cross shaft 43. The shaft is provided with a sprocket 44 con necting by asprocket chain 45 with another and smaller sprocket 4G on the main driving shaft.' The eccentrics are quite large, and the arrangement is such that-the shear cuts only near the upper limit of the stroke of the moving cutter, which may thus have uninterruptedv recii'irocatinr movement instead of an objectionable intermittent movement by a cam.

` Near the upper ends of the standards 36 are mounted horizontal `guide-bars 4'?, and on these are mounted slides 48 carrying piv` oted pawls or dogs 49. These are in the na-v ture of bell-crank levers, and are provided at the forward ends with adjustable tips or dons 50, of suitable size and shape to engage one ofthe smaller corrugations in the strawboard sheet. The tips might be parts of the bell-crank levers themselves, but are preferably adjustable thereon, as great .eX- actness is here required in feeding' the sheetstraig'ht forwardQand to the proper line for out-off. The bell-cranks are connected byy a `rock-shaft 50a, and on the rock-shaft is mounted` a counterweight 51, which rocks across the center of gravity at the alternate impulses of the feeding mechanism. To the depending ends of the bell-cranks 52 are connected links 53 coupled to levers 54 pivoted at their lower ends to brackets lntermittent motion is imparted to these levers by a connecting` rod 56at each side engaging a wrist-pin 57'on the eccentric 42. The. feed acts somewhatin advance of the cut-od'.

To prevent 'recoilof the sheet-after the forward impulse of thefeed, a detent is providedga-s shown. This in practice comprises a pair-ot levers 58 with tips correspending to those of the feed levers, and at their rear ends attached to a rock-shaft 58a Secured to the same shaft is a double lever 58", one arm of which is provided with a spring 59 tendina' to hold the detent against the corrugated material. The other end of the lever engageswith a .slip-rod 61 rovided with a collar Gla, and at the other end connecting with an eccentric Gib on the main shaft. The detent may thus act alternately with the feed, as will beevident.

In some conditions of the material, as when especially dry. it is desirable to moisten it somewhat before passing it between -the corrugating rolls. This is accomplished by delivering to one of its surfaces li lght jets of steam through a suitable nozzle 62 across the path of such material. A valve 63 shuts ofi' the steam when not needed.

feed to tear or jerk the material.v All that' the intermittent feed is required to do-,is merely to push forward the exposed Vpart of the corrugated'sheet looped up over the corrugating roll. Atv ,the extreme lforward movement of the feed the cut-off comes into action, and the sheet is severed midway of the wide corrugation. The back action of the feed throws the engaging fingers straight down andy out of the groove in the paper, and it travels thence back to its ,eXtreme rearward position., movement of the feed the linger is thrown straight up and back into a new notch, and the operation is repeated. Provision is also made for-slitting. the paper before passing between the corrugating rolls. For this purpose the roll 8 maiy be grooved at 8a to take the edge of a rotary, shear 8b on a shaft 8C driven by ai ,belt 8d. lVhen not needed the slitter may be dispensed with. j

It is tobe noted that the upper corrugating roll is mountedin yielding bearings. This is in part to compensate for any want of rniformityV in the thickness of material passing between the luting rolls, but its more important function is to permit, a littlc yielding motion on the part of the smaller flnting roller made necessary by the presence of some flutes wider than the r'est. 'In

`practice this variation in the width of `the material passing between them, as'well as to.l

rapidly wear ont intermeshing gear teeth and flutes.

At, the first forward' Having thus described my invention, I

. claim: l l l. In a paper corrugating machine, the

combination of iuted rolls, .the toothed 'rol-l being circumferentiall'y grooved; encircling wires partially inclosing the other roll, and lying Within said grooves, and elastic means for holding said wires snugly in such rollinclosing position.

2. In a paper corrugating machine, the combination of a pair of corrugating'f rolls,

one of them circumferentially lgrooved asv described, retaining wires lying in the groove between said' rolls, andconnecting at their initial ends to 'a cross-bar or rod, a deilecting plate adapted to feed the entering` material between said rolls, and oppositely disposed inclined fingers attached to the cross-rod! and lying in the open spaces in said grooves for stripping the finished material from the retaining roll.

3. In a machine for corrugating packing paper, a pairl of rolls fluted in regular.

groups of a plurality of uniform channels and engaging ribs, and single, wider intermediate 'channels and ribs, a shear adapted to sever the corrugated paper through the wider flutes, means for actuating said shear and rolls, and feedmechanism adapted to feed forward the corrugated sheet a predetermined distance, so as' to be severed in the 

